Inferring Trustworthiness From Moral Decision Making

Daniel Kahneman: The benefit that people get from taking a deontological position is that they look more trustworthy. Let's look at the other side of this. If I take a consequentialist position, it means that you can't trust me because, under some circumstances, I might decide to break the rule in my interaction with you. I was puzzled when I was looking at this. What is the essence of what is going on here? Is it deontology or trustworthiness? It doesn't seem to be the same to say we are wired to like people who take a deontological position, or we are wired to like people who are trustworthy. Which of these two is it?

Molly Crockett: What the work suggests is that we infer how trustworthy someone is going to be by observing the kinds of judgments and decisions that they make. If I'm interacting with you, I can't get inside your head. I don't know what your utility function looks like. But I can infer what that utility function is by the things that you say and do.

This is one of the most important things that we do as humans. I've become increasingly interested in how we build mental models of other people's preferences and beliefs and how we make inferences about what those are, based on observables. We infer how trustworthy someone is going to be based on their condemnation of wrongdoing and their advocating a hard-and-fast morality over one that's more flexible.

MOLLY CROCKETT is an associate professor of experimental psychology, fellow of Jesus College, and distinguished research fellow at the Oxford Centre for Neuroethics, University of Oxford. Molly Crockett's Edge Bio Page

DANIEL KAHNEMAN is the recipient of the Nobel Prize in Economics (2002), and the Presidential Medal of Freedom (2013). He is the Eugene Higgins Professor of Psychology Emeritus, Princeton, and author of Thinking Fast and Slow.Daniel Kahneman's Edge Bio Page